With modern pip, setuptools is not required on runtime.
Python packages use PEP 517 instead.
Hence, we no longer Recommend setuptools and pip, but pip only.
Users who are impacted may see one of:
ModuleNotFoundError: No module named 'setuptools'
ModuleNotFoundError: No module named 'pkg_resoureces'
They can easily recover by installing python3-setuptools or python3-pkg_resources.
Related but not explicitly part of:
https://fedoraproject.org/wiki/Changes/Reduce_dependencies_on_python3-setuptools
Together with this change, we move the pip Recommendation to the python3-devel package.
"Regular users" of Fedora are less likely to need pip and more likely to brick
their systems with it. If they need pip, they can dnf install pip.
Pip (incl. setuptools) still works in environments created with venv or virtualenv.
Not bumping the release because this only affects the package when we
upgrade the main Python in Fedora to 3.10.
The regex was broken for two+ digit minor version.
Providing python(abi) = 3.10 confuses the dependency resolution in the
Python 3.10 testing copr.
E.g. python3-sphinx requires `python(abi) = 3.10` and `/usr/bin/python3`.
In certain circumstances, dnf installs python3 and python3.10 from rawhide,
satisfying both of the dependencies.
Running `sphinx-build` hence ends up with:
Traceback (most recent call last):
File "/usr/bin/sphinx-build", line 5, in <module>
from sphinx.cmd.build import main
ModuleNotFoundError: No module named 'sphinx'
The `dirname $0` breaks the script when it is linked to a different location,
for example the RHEL's /usr/libexec/platform-python-config.
The error handling was never reachable, failed exec ends the script.
See https://src.fedoraproject.org/rpms/python3.9/pull-request/38
We create an artificial Git repo to apply patches.
Python build system thinks that it's building from Git and embeds a bogus
branch name into its version string:
$ python3
Python 3.9.0b5 (heads/master-dirty:24c7f56, Aug 3 2020, 00:00:00)
[GCC 10.2.1 20200804 (Red Hat 10.2.1-2)] on linux
Type "help", "copyright", "credits" or "license" for more information.
Tell configure that Git is not installed. This reverts that part
of sys.version to "default".
Pythons in RHEL/Fedora use different names for some architectures
than upstream and other distros (for example ppc64 vs. powerpc64).
See patch 274.
That means that an extension built with the default upstream settings
(on other distro or as an manylinux wheel) cannot be found by Python
on RHEL/Fedora because it has a different suffix.
This patch adds the original names to importlib so Python is able
to import extensions with an original architecture name in its
file name.
This saves about 2 MiB from the package. When all rpms get extracted,
the comparison is as follows on an ext4 filesystem:
With this patch:
$ du -s usr
195828 usr/
Without this patch:
$ du -s usr
198224 usr/
Which is a difference of 2.396 MiB.
To reduce the filesystem footprint of the Python installation, some
files are now being removed and only one level of their pycache
(non-optimized) is being kept.
These particular files were chosen for their size and the fact that they
are autogenerated, thus hard to read.
